// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_H_
#define UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ui/display/types/display_constants.h"
#include "ui/display/types/native_display_delegate.h"
#include "ui/ozone/platform/drm/host/gpu_thread_observer.h"

namespace ui {

struct DisplaySnapshot_Params;
class DisplaySnapshot;
class GpuThreadAdapter;

class DrmDisplayHost : public GpuThreadObserver {
public:
    DrmDisplayHost(GpuThreadAdapter* sender,
        const DisplaySnapshot_Params& params,
        bool is_dummy);
    ~DrmDisplayHost() override;

    DisplaySnapshot* snapshot() const { return snapshot_.get(); }

    void UpdateDisplaySnapshot(const DisplaySnapshot_Params& params);
    void Configure(const DisplayMode* mode,
        const gfx::Point& origin,
        const ConfigureCallback& callback);
    void GetHDCPState(const GetHDCPStateCallback& callback);
    void SetHDCPState(HDCPState state, const SetHDCPStateCallback& callback);
    void SetGammaRamp(const std::vector<GammaRampRGBEntry>& lut);

    // Called when the IPC from the GPU process arrives to answer the above
    // commands.
    void OnDisplayConfigured(bool status);
    void OnHDCPStateReceived(bool status, HDCPState state);
    void OnHDCPStateUpdated(bool status);

    // GpuThreadObserver:
    void OnGpuThreadReady() override;
    void OnGpuThreadRetired() override;

private:
    // Calls all the callbacks with failure.
    void ClearCallbacks();

    GpuThreadAdapter* sender_; // Not owned.

    scoped_ptr<DisplaySnapshot> snapshot_;

    // Used during startup to signify that any display configuration should be
    // synchronous and succeed.
    bool is_dummy_;

    ConfigureCallback configure_callback_;
    GetHDCPStateCallback get_hdcp_callback_;
    SetHDCPStateCallback set_hdcp_callback_;

    DISALLOW_COPY_AND_ASSIGN(DrmDisplayHost);
};

} // namespace ui

#endif // UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_H_
